From f129bdab552d21ae3cd77412342b94b5f23587b2 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Mon, 25 Sep 2017 04:22:09 +0200
Subject: netlink: switch from ioctl to netlink for configuration

---
 src/tools/containers.h | 95 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 src/tools/containers.h

(limited to 'src/tools/containers.h')

diff --git a/src/tools/containers.h b/src/tools/containers.h
new file mode 100644
index 0000000..b9c85e0
--- /dev/null
+++ b/src/tools/containers.h
@@ -0,0 +1,95 @@
+/* Copyright (C) 2015-2017 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
+
+
+#ifndef CONTAINERS_H
+#define CONTAINERS_H
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <net/if.h>
+#include <netinet/in.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+
+#include "../uapi/wireguard.h"
+
+struct wgallowedip {
+	uint16_t family;
+	union {
+		struct in_addr ip4;
+		struct in6_addr ip6;
+	};
+	uint8_t cidr;
+	struct wgallowedip *next_allowedip;
+};
+
+enum {
+	WGPEER_REMOVE_ME = (1 << 0),
+	WGPEER_REPLACE_ALLOWEDIPS = (1 << 1),
+	WGPEER_HAS_PRESHARED_KEY = (1 << 2),
+	WGPEER_HAS_PERSISTENT_KEEPALIVE_INTERVAL = (1 << 3)
+};
+
+struct wgpeer {
+	uint32_t flags;
+
+	uint8_t public_key[WG_KEY_LEN];
+	uint8_t preshared_key[WG_KEY_LEN];
+
+	union {
+		struct sockaddr addr;
+		struct sockaddr_in addr4;
+		struct sockaddr_in6 addr6;
+	} endpoint;
+
+	struct timeval last_handshake_time;
+	uint64_t rx_bytes, tx_bytes;
+	uint16_t persistent_keepalive_interval;
+
+	struct wgallowedip *first_allowedip;
+	struct wgpeer *next_peer;
+};
+
+enum {
+	WGDEVICE_REPLACE_PEERS = (1 << 0),
+	WGDEVICE_HAS_PRIVATE_KEY = (1 << 1),
+	WGDEVICE_HAS_LISTEN_PORT = (1 << 2),
+	WGDEVICE_HAS_FWMARK = (1 << 3)
+};
+
+enum {
+	WG_API_VERSION_MAGIC = 0xbeef0003
+};
+
+struct wgdevice {
+	char name[IFNAMSIZ];
+	uint32_t ifindex;
+
+	uint32_t flags;
+
+	uint8_t public_key[WG_KEY_LEN];
+	uint8_t private_key[WG_KEY_LEN];
+
+	uint32_t fwmark;
+	uint16_t listen_port;
+
+	struct wgpeer *first_peer;
+};
+
+#define for_each_wgpeer(__dev, __peer) for ((__peer) = (__dev)->first_peer; (__peer); (__peer) = (__peer)->next_peer)
+#define for_each_wgallowedip(__peer, __allowedip) for ((__allowedip) = (__peer)->first_allowedip; (__allowedip); (__allowedip) = (__allowedip)->next_allowedip)
+#define max(a, b) ((a) > (b) ? (a) : (b))
+
+static inline void free_wgdevice(struct wgdevice *dev)
+{
+	if (!dev)
+		return;
+	for (struct wgpeer *peer = dev->first_peer, *np = peer ? peer->next_peer : NULL; peer; peer = np, np = peer ? peer->next_peer : NULL) {
+		for (struct wgallowedip *allowedip = peer->first_allowedip, *na = allowedip ? allowedip->next_allowedip : NULL; allowedip; allowedip = na, na = allowedip ? allowedip->next_allowedip : NULL)
+			free(allowedip);
+		free(peer);
+	}
+	free(dev);
+}
+
+#endif
-- 
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